Picker-check for looms



Jnllm-mlnl I U HW IHM A!!! bull" Patented June 14, 1898.

Willi i'allil llllllll IHHIII W. LONZO.

H v y PIGKBR 011301: FOR LOOMS.

(No. Model.)

' UNITED STATES PATENT OFFICE.

. WILLIAM LONZO, or FITcrIBURo, MASSACHUSETTS.

PICKIIR-CHEQKIFIOR Looms.

. SPECIFICATION forming part of Letters Patent No. 605,581, dated June 14, 1898.

Application filed September 1 8 97 Serial No. 652,726. (No model.)

To all whom it may concern: 4

Be it known that I, WILLIAM LONZO, resid ing at Fitchburg,in thejcounty of'VVorcester and State of Massachusetts, have inventeda new and useful Picker-Check for Looms, of which thefollowing is a specification.

My invention relates tochecks for the picker-sticks of looms,-an d hasfor its object to generally improve the construction and operation of this class of devices and at the same time simplify and renderthem more effective and durable in operation.

With this object in view myinvention con- 1 sists in a picker-check for looms provided with improved means for adjusting its position with relation to the picker-stick and for adjusting the pressure of the spring upon the latch, said object being carried out by means of the improvedconstruction, arrangement, and combination of parts hereinafter ,ex plained and afterward specifically pointed out in the claim.

In order to enable others skilled in the" art I to which my invention most nearly appertains to make and use the same, I will now proceed to describe its construction and op:

position illustrated in Fig. 1. Fig. 3 is a de'-' tail View of the opposite end of the check from that shown in Fig. 2, the lower portion of the stembeing broken away. Fig. 4 is a vertical section taken through the lay and the check-securing bracket on the line 4 4 of Fig.

2, looking in the dire ction of the arrow. .Fig. 5 is a top plan View of the check, partly broken away.

Like letters of reference mark the same parts wherever they occur in the various figures of the drawings.

Referring to the drawings by letter, A indicates the front, and B the rear, of the lay of the loom, upon which the shuttle-box is usually mounted.

. O is; the picker-stick, of which the upper portion only is shown, it being well understood that it is pivotedat its lower end to the frame of the-loom and moves between the frontand rear pieces A and B of the lay.

Upon the frontof the lay I mount a bracket ID by means of screws E, said bracket being provided with a vertical bore or opening in which is mounted the stem or staff F of my improved; picker-check, set bolts or screws G being let into the face of the bracket to bear upon the stem F to secure it in any position to which it may be adjusted, it being capable of vertical and swiveling adjustment in the bracket. The stem F is provided at its upper end with a circular head I-I,which is provided witha central'horizontal boreand a series of smaller horizontaibores I, arranged concentrically around the central bore.

J is a plate from which projects laterally a central stem K,whi ch passes through the central bore of the circular head H of the stem F and is provided onits outer end with a thread to receive the nut Lto securely hold it in position in the head. ,On the upper side of the plate J, in the opposite direction, projects an arm M, and the stem K projects also in the same direction through a latch N, which is pivotally mounted thereon and secured by a split pin 0. The latch N is curvedf'downward and inward and has a lug 0'. projecting from it on'the opposite side of itsfhub. A spring P is coiled around the stem K between the plate J K and head H and has one end bent outward and turned horizontally at Q to bear upon the outside of the latch Nand the other end similarly bent, as at R, to enter one of the concentric series of small bores I inthe head H. I

" In'its normal position my invention will be so adj usted as to stand, as shown in the drawings, with the latch N in; the path of motion of the picker-stick O, and so adjustedwith relation to thepicker-stick-that when the or turning movement of the stem F in the bracket D.

The operation of my invention will be apparent to those skilled in the art from the foregoing description. The latch N will be normally held downward by the action of the arm Q, of the spring I, its downward movement under the action of the spring being limited by the lug 0' coming in contact with the arm M. hen the picker-stick first comes in contact with the under side of the latch N, the latch will give under the action of the spring, which will afford a gradually-increasing resistance to the motion of the picker-stick by reason of being coiled tighter as the latch N is moved outward, thereby producing an easy and gentle stopping of the picker-stick, which is a very important consideration. As the stick passes along under the latch it will gradually raise it until it finally reaches the position shown in Fig. 2 at the end of its stroke. The strength of the spring maybe increased or diminished by changing the arm R thereof into another of the concentric series of holes I in the head H, so that any required amount of pressure within the limit of power of the spring maybe applied to the latch. This adjustment is of importance on account of the varying resistance needed to properly stop or check the picker-sticks in different looms to which my check may be applied.

It will of course be understood that there must be a check placed at each end of the lay, each check being designed to act in conjunction with the picker-stick on that side of the loom, and inasmuch as it is my intention to secure the attaching-bracket always to the front of the lay it will be obvious that the bracket must be reversed in position to secure the check at the other end.

IVhen the latch N is turned upon the stem K, there will be a tendency to rotate the stem attimes and thus loosen the nut L. To prevent this tendency, the thread 011 the stem K in the nut Ii will be right-handed in the check at one end of the lay and left-handed in the check at the other end.

From the foregoing description it will be seen that by my invention I provide a pickereheck which is very simple in construction and which can be adjusted by the operator by the use of tools which are always athand in the loom-shop.

\Vhile I have illustrated and described the best means now known to me for carrying out my invention, I wish it to be understood that I do not restrict myself to the exact forms and constructions shown, but hold that any such slight changes or variations as might suggest themselves to the ordinary mechanic will properly fall within the limit and scope of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

In a picker-check for looms, the combination of the lay of a loom, a bracket secured to the face of the lay and provided with a vertical bore, a vertical stem, adjustable longitudinally and rotatable in said bore and provided with a circular head on its upper end, having a concentric series of small horizontal openings, a plate located parallel to said head at a short distance therefrom, provided with a horizontal stem projecting beyond the plate, across the lay and through a central bore in the circular head, an arm projecting from the periphery of the plate, a curved latch pivoted upon the projecting end of the stem and having a lug adapted to engage the arm, and a spring coiled around the stem between the vertical head and plate, having one end engaging the outside of the latch and the other end engaged in one of the openings of the concentric series in the circular head, substantially as described.

\VILLIAM LONZO.

IVitnesses:

JosEPH POLAND, JULIUs L. LoNzo. 

